How do they determine (or you determine yourself) what category/level you play at? I was looking at a tournament application, i saw categories/events listed as "open, B, C, D, U13" and "U11." How is each of the classes classified?
open is for the older guys, the especially if there over 20. a, b, c, d is just the level of play you are at. a is like really strong club players, b is not a strong, c is okay, d is decent. U13 and U11 are age categories, they stand for under 13 and under 11. There's u16 and u19 also.